These strategies are often based on a single objective (e.g. species richness conservation or species abundance conservation), a constant site protection cost (regardless of the location and productivity of the site) and a spatial scale that are not always relevant for decision-making.
In this regard, Finnish researchers have developed a new model to select several alternative sites so they can be compared for efficient biodiversity maintenance. From this, they determined the site that would be selected to meet both budget constraints and one or more conservation objectives (species richness, red-listed species or species abundance preservation).
The outcome is therefore a cost-effective solution, which takes into account the monetary losses resulting from protecting the selected areas (e.g. the revenue losses due to harvest restrictions). The authors calibrated their model on 32 semi-natural old-growth forest stands in Finland, which contain 632 species, 18 of them red-listed in Finland according to the IUCN1 criteria.
Their modelling reveals that:
The benefits from conservation increase with the conservation budget, but at a diminishing rate.
The site selection varies depending upon the single conservation objective.
When selection is based on multiple objectives, conflicts appear between protecting red-listed species and maintaining species richness. Results show that selecting sites to protect 6% more red-listed species diminishes the overall species richness by 3%.
As the marginal costs of conservation increase as the number of selected sites increases, the authors conclude that it is not economically efficient to protect all the species in every region or planning area. In addition, they highlight that protecting red-listed species is often in conflict with other conservation objectives (such as species richness preservation). As a consequence, trade-offs appear between conservation objectives.
Practically, they indicate that if the budget for conservation is low, it might be reasonable to make a pre-selection of sites based on the ecological information available and to then choose the sites that are the cheapest to protect. On the contrary, if the conservation budget is high, the sites should be selected in a complementary way. The authors also note that generally focussing on red-listed species might be reasonable, as they are a conservation priority.
Overall, this model provides new insight and new support for decision-making, which could be useful to achieve the EU target of halting biodiversity losses by 2010.
Liisa Harjula | alfa
A new indicator for marine ecosystem changes: the diatom/dinoflagellate index
21.08.2017 | Leibniz-Institut für Ostseeforschung Warnemünde
Value from wastewater
16.08.2017 | Hochschule Landshut
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
21.08.2017 | Materials Sciences
21.08.2017 | Health and Medicine
21.08.2017 | Materials Sciences